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10th Class Chemistry Chapter 12  Hydrocarbons Notes

10th Class Chemistry Chapter 12  Hydrocarbons Notes   Question 1: What are hydrocarbons? What are different types of hydrocarbons?  Answer: Hydrocarbons Hydrocarbons are those compounds which are made up of only carbon and hydrogen elements.   Hydrocarbons as parent organic compounds: Hydrocarbons are regarded as the parent organic compounds since other organic compounds are considered to …

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10th Class Chemistry Chapter 11  Organic Chemistry Notes

10th Class Chemistry Chapter 11  Organic Chemistry Notes   Question 1: Write a note on history of organic and inorganic chemistry? Answer: History of Organic and Inorganic chemistry: Initially (before 1828), the name organic chemistry was given for the chemistry of compounds obtained from plants and animals, i.e., from living organism. The word organic signifies life. …

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10th Class Chemistry Chapter 10  Acids bases and salts

10th Class Chemistry Chapter 10  Acids bases and salts Question 1: In how many groups all present day organic and inorganic substances are classified? Also write a note on history of acids? Answer: History of Acids and Bases: Acids, bases and salts are three distinct classes in which almost all the organic and inorganic compounds …

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10th Class Chemistry Chapter 9 Chemical Equilibrium

10th Class Chemistry Chapter 9 Chemical Equilibrium Q1. Describe a reversible reaction with the help of an example and graph. Answer: Reversible reaction:  A reaction in which the products recombine to form reactants is called reversible reaction. OR  a reaction that proceed both in forward as well as reverse direction is called reversible reaction. Representation: A reversible …

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Chapter 8 Chemical Reactivity 9th Class Chemistry Notes

Chapter 8 Chemical Reactivity 9th Class Chemistry Question#1) Define metals? What are the different groups of metals? Answer: METALS Metals are the elements (except hydrogen) which are electropositive and form cations by losing electrons.   Classification of Metals: Metals can be categorized. Very reactive:potassium, sodium, calcium, magnesium and aluminium. Moderately reactive :zinc, iron, tin and …

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Chapter 5 PHYSICAL STATES OF MATTER 9th Class Chemistry

PHYSICAL STATES OF MATTER 9th Class Question#1) What is Matter? Write a note on different physical states of matter? Answer: Matter: Any thing that has mass and occupy space is called matter. Matter exists in three physical states. 1) Gas.  2) Liquid.  3) Solid. 1) Gas or Gaseous state: State of matter that has neither fixed …

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